问题 选择题

下列说法正确的是

A.分子式为CH4O和C2H6O的物质一定互为同系物

B.甲烷、乙烯和苯在工业上都可通过石油分馏得到

C.苯酚钠溶液中通入少量二氧化碳生成苯酚和碳酸钠

D.1mol有机物与足量的Na和NaOH完全反应,消耗的Na和NaOH物质的量之比为:3:2

答案

答案:D

题目分析:A.分子式为CH4O的物质是甲醇,而分子式为C2H6O的物质可能是乙醇CH3CH2OH也可能是甲醚CH3OCH3。因此二者不一定互为同系物。错误。B.甲烷可通过石油的分馏获得,苯可通过煤的干馏获得,而乙烯是通过石油的裂解获得。错误。C.由于酸性:H2CO3>苯酚> NaHCO3,所以苯酚钠溶液中通入少量二氧化碳生成苯酚和碳酸氢钠。错误。D.在有机物中含有的醇羟基与酚羟基都能与Na发生反应,而只有酚羟基可以与NaOH发生反应。所以1mol的该化合物与足量的Na和NaOH完全反应,消耗的Na和NaOH物质的量之比为:3:2。正确。

完形填空
“You speak very good English”
The other day I heard an American say to a Chinese student of English. “You  1 very good English.” But the student answered, “ No, my English is very poor.” The foreigner was quite
  2 at the answer. Thinking he had not made himself  3 or the student had not heard him clearly, he said, “Yes, indeed, you speak it very well.” But the Chinese student still  4 saying  “No”.  5 the foreigner gave up and didn’t know what to say.
What’s wrong with the student’s answer? It is because he didn’t accept a compliment as the American people  6 . He should have said “Thank you” instead of “No”. He actually understood what the American had said. But he thought he should be modest. If someone says to a woman, “ You look  7 beautiful with the new clothes  8 .” she should be very happy and answer, “Thank you.” In our country we think  9 modest is a virtue and showing off is a bad behavior. But in the West, if you are modest and say, “ No,   10 I can’t do it well,” then the others will take it for granted (理所当然)that you  11 can not do it. If you often say,“No”, you will certainly be looked down upon by  12 . When  13 for a job, if one says something like “Yes, I can certainly do it” instead of “ Let me have a try on the job”, he or she can expect to get it. So in the West, one should always be confident.  14 self-confidence, he can’t go anywhere. Confidence is of great  15 to one in a country where competition is quite keen.(激烈)
小题1:
A.sayB.talkC.speakD.tell
小题2:
A.surprisingB.surprisedC.laughedD.laughing
小题3:
A.understoodB.understandC.to understandD.understanding
小题4:
A.keepB.keepingC.keepsD.kept
小题5:
A.At firstB.By the wayC.In the endD.First of all
小题6:
A.didB.doneC.to doD.do
小题7:
A.suchB.such aC.soD.so a
小题8:
A.forB.onC.inD.into
小题9:
A.beingB.beC.havingD.have
小题10:
A.I’m afraidB.I’m not sureC.I don’t mindD.I don’t know
小题11:
A.hardlyB.reallyC.badlyD.luckily
小题12:
A.anotherB.otherC.the otherD.others
小题13:
A.askingB.askC.provideD.providing
小题14:
A.WithB.WithoutC.byD.under
小题15:
A.importantlyB.unimportantC.importantD.importance
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